Open dataset twice once for input and once for output in unicode system

Hi All,
In a program
I used a open dataset to read the data from the file.
OPEN DATASET cmp_file FOR INPUT IN TEXT MODE
ENCODING NON-UNICODE.
Then i closed the file.
Again later in the program,
I used a open dataset to transfer the data.
OPEN DATASET cmp_file FOR OUTPUT IN TEXT MODE
ENCODING NON-UNICODE.
But this time I get sy-subrc = 8.
Unable to open the file and subsequent TRANSFER is leading to the runtime error.
Note : I am using a unicode system
I could run the same program well in non-unicode system..
->
Is it that if a file contains data already
1.I need to delete the data and open it
or
2.I need to open in APPENDING mode manadatorily...
in case of UNICODE system..
Kindly suggest..

Hi,
IF you have write permission al S.O. Level you need to check your DATASET rigths using AUTHORITY_CHECK_DATASET, this validate your rigths with S_DATASET object.
Example
TYPE-POOLS SABC.
CALL FUNCTION 'AUTHORITY_CHECK_DATASET'
EXPORTING PROGRAM = 'ZDATASET'
ACTIVITY = SABC_ACT_READ
FILENAME = '/tmp/sapv01'
EXCEPTIONS NO_AUTHORITY = 1
ACTIVITY_UNKNOWN = 2.
See SABC type pool to know wich activities are aviable.
Hope this help.
Regards

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nategm wrote:
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Hello,
We upgraded the system to a unicode system and we're getting runtime errors using PB infotypes (pb20/pb30) for the
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IN LEGACY BINARY MODE [CODE PAGE cp]
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For more information, check the below link.
[http://www.s001.org/ABAP-Hlp/abapopen_dataset.htm|http://www.s001.org/ABAP-Hlp/abapopen_dataset.htm]
Hope this helps.
Thanks,
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* Reward each useful answer
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Hi
Go thru this code, it will help you,.
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Pls reward if help.
Refer this:
http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3ca6358411d1829f0000e829fbfe/frameset.htm
ABAP code for uploading a TAB delimited file into an internal table. See code below for structures.
*& Report ZUPLOADTAB                                                  *                     &----
*& Example of Uploading tab delimited file                             *
REPORT zuploadtab                    .
PARAMETERS: p_infile LIKE rlgrap-filename
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    name2 like pa0002-name2,
    age   type i,
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DATA: it_record TYPE STANDARD TABLE OF t_record INITIAL SIZE 0,
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*Text version of data table
TYPES: begin of t_uploadtxt,
name1(10) type c,
name2(15) type c,
age(5) type c,
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constants: con_tab TYPE x VALUE '09'.
*If you have Unicode check active in program attributes then you will
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*class cl_abap_char_utilities definition load.
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*START-OF-SELECTION
START-OF-SELECTION.
ld_file = p_infile.
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*END-OF-SELECTION
END-OF-SELECTION.
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Display report data for illustration purposes
loop at it_record into wa_record.
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OPEN DATASET Big/Little Endian

Thread opened on behalf of colleague:
SOURCE
I want to create a file on a system that is Big Endian with codepage 4102.
TARGET
I want to read this file in a system that is Little Endian with codepage
4103.
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The file on the little endian system is not being read correctly. It shortdumps with CONVT_CODEPAGE.
Thanks.

Hi Wang,
Check thie following link:
http://www.s001.org/ABAP-Hlp/abapopen_dataset.htm
Hope this helps you.
Regards,
Chandra Sekhar

Open dataset twice once for input and once for output in unicode system

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